To provide a liquid pressure generator that can prevent abrasion powder generated by slide caused when a guiding part guides a member to be guided provided in a shaft member from infiltrating into a front side through an outer peripheral surface of a piston.SOLUTION: In a liquid pressure generator, a shaft member 25a is provided with a member 130 to be guided for stopping rotation of the shaft member 25a. A second cylinder hole 21 has a sliding part 21c in which a second piston 22 slides and a large-diameter part 21d, formed behind the sliding part 21c, which is larger in inner diameter than the sliding part 21c. Further, a sleeve 140 in a nearly cylindrical shape having a groove 141 as a guiding part that guides the member 130 to be guided in an axial direction of the shaft member 25a is inserted into the large-diameter part 21d. Between an outer peripheral surface of the second piston 22 and an inner peripheral surface of the large-diameter part 21d is arranged an annular seal member 170.SELECTED DRAWING: Figure 2

    【課題】シャフト部材に設けられた被案内部材を案内部が案内する際の摺動による摩耗粉がピストンの外周面を経て前方へ侵入することを防止できる液圧発生装置を提供する。【解決手段】液圧発生装置において、シャフト部材25aには、シャフト部材25aの回り止めのための被案内部材130が設けられている。第二シリンダ穴21は、第二ピストン22が摺動する摺動部21cと、該摺動部21cの後方に形成されており摺動部21cよりも内径が大きい大径部21dと、を有している。また、シャフト部材25aの軸方向に被案内部材130を案内する案内部としての溝141を有する略円筒状のスリーブ140が、大径部21d内に挿入されている。そして、第二ピストン22の外周面と大径部21dの内周面との間に、環状のシール部材170が配置されている。【選択図】図2


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    Title :

    LIQUID PRESSURE GENERATOR


    Additional title:

    液圧発生装置


    Contributors:

    Publication date :

    2022-05-17


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B60T Bremsanlagen für Fahrzeuge oder Teile davon , VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF / F16J Kolben , PISTONS



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